Stapling machine



Dec. 1, 1925e A. H. PRENZEL.

STAPLING ivIACHI NE Filed Aug. 21. 1922 5 Sheets-Sheet l ATTORNEYS A. H. PRENZEL.

STAPLING MACHINE Dec. l 1925 Filed Aug. 21. 1922 5 Sheets-Sheet 2 IIIIIIIIIIIH1 WITNESSES A TTRNEYS Dec. 1l 1925.

A. H. PRENZE-L STAPLING MACHINE Filed Aug. 21. 1922 5 Sheets-Sheet 3 Iam A TTOHNEYS Dec. l, 1925 H. PRENZEL sTAPLING MAoHmE Filed Aug. 21. 1922 5 Sheets-Sheet 4 ATTORNEYS y Dec. 1,1925' A. F'RENZEL STAPLING MACHINE Filed Aug. 21, 1922 lSheets-Sheet 5 W/T/VESSES Patented Dee. l, 1925i.

raTENr oiFFieE.

STAPLING MACHINE.

Application filed August 21, 1922. Serial No. 583,322.

To m7/ whom t 07mg/ (formera:

lie it known that l, ADAM H. PnnNniaL, :i Citizen of the United and a resident of ll'alifax, in the county of lauphin and State of ltennsylvania, have invented eertain new and nsefnl Improvements in Stapling Machines, of which the following is :i specification.

My invention relates to improvements in Al-apling machines, and. it consists of the minrtruetions, combinations and mode of opiuratiffn herein described and claimed.

.in ohjeet of the invention is to provide a stapling machine with means to form pleats, folds or puelers to take up the slack leather as the staples are inserted.

.-i fin-ther object of the invention is to provide a stapling machine with means to draw the leather down tight over the last as `the staples re inserted around the toe.

fin-ther ohjeet of the invention is to provide a fold controller and side Wipers which rooperate with lingers to form folds or packers during the operation of the sta piii'lg marhine in which they are en'ibodied.

fi 'thriller olojeet of the invention is to provide a fold Controller, side wipers and iingers reacting vith the staple guide of a stapling machine, to grip and stretch the upper and lining before the staple driven, thereby preventing` the upper and liningl from receding and thns tending to straighten ont the sole Flange to which they are stapled.

.-"i further object of the invention is to provide means for adjusting the aforesaid lingers either forwardly, to lengthen the fold, or upwardly to make a larger fold and thus draw the work np Close! around #he toe.

ither ohii'zets and ach. :antal will appear in the following speeii'ieation, reference 'oeing had to the accompanying drawings, in which! Fig. l is an elevation of the right side of a stapling maehine embodying' the iniproved fold-forming mechanism.

Fig. f is a side elevation of the left side of the same machine,

lfig. 2 is a detail sectional view (parts in elevation) corresponding inpostion to Fig. l and showing the driving head and rocker in what might he termed the normal position)` the flange and `zipper structure ofi a shoe beingrespectively positioned ander and ahove the lingers in readiness for the staplii'ig operation,

l? is a similar viewshowing the rocher and driving head. brought down in the first step of the operation, the fold Controller, side wipers, staple guide andiingers all aiding in drawing the leather tight andforming the folds,

Fig. 5 is a view similar to Fig. el, illustrating thek second step of the operation wherein the staple is driven hy means ofV the driving arm,

G is a detail perspective view of a partly finished shoe showing how the folds are formed as the staples are driven, and also illustrating the ample selvage left loetween the line of the staples and the edge of the last for subsequent sewing,

Fig. is a detail front elevation of the machine in Fig. 1,

Fig. 8 is a detail plan view of the stapling bracket, showing thelasting fingers in place,

Fig. 9 is a detail section taken on the line 9 9 of Fig. 3 and illustrating the disposition of the parts in the normal position of the machine, l

Fig. l0 is a'seetion on the line 10-10 of llig. 4.- showing` how the folds are formed in the second step of the operation,

Fig. 1l is a detail elevation (somewhat exaggerated) illustrating the imprints left by the lasting lingers, side wipers, staple guide and fold Controller when the driving head is brought down into the position in l 1 ig.

Fig. 12 a detail perspective view of a portion of the stapling machine, illustrating the side wipers: and fold Controller removed, and showing the lasting fingers in position,

Fig. 13 is a detail perspective view of the front of the side wiper and fold controller support,

Fig. 1.4 is a similar view illustrating said support i'i'oiii the rear, and

Fig. l5 is a detail perspective vieu' illust 'ating the liiiished show in so tar as the stapling and sewing are concerned.

This invention is one of a series of thi'ee which relate to applying the upper leatherl and lininpto the sole ot a shoe. The serA ond invention (disclosed in Patent 1,489,966, granted to me April S, 1924) comprises an attachment to the machine in Fig. 1 and in substitution for the stapling bracket shown therein, lor the purpose of inserting staples around the heel seat, as shown in Fig. 15. The thii'd invention (also disclosed in my Patent 1,500,527 oi' July 8, 1924) consists o' the peculiar method Which is followed in applying the upper leather and lining to the flange of the shoe sole.

Structure which is not a part of the invention but which is necessary in combination with the fold-forming mechanism which is the invention, brieiiy described, comprises the standard 1 which is preferably hollow so that the connecting rod 2 ma;A be extended therethrough down to the floor Where it is attached to a treadle (not shown). The upper end of the connecting rod 2 is pivotally joined at 3 to an actuating link which, in turn, is pivoted at 5, to a dog 6 which has a piv'otal mounting` at 7 to a portion of the frame 8 which is fixed at 9 to a table 10 on top of the standard.

A rocker arm 11, pivoted at 12 to the actuating link 4 and guided between the iframe 8 and a lug 13, depresses the rocker 14 through its pivotal connection 15 therewith upon each operation of the connecting i'od 2, and necessarily of the treadie (not shown) to which it is joined at the bottom. 'llie rocker 14 is pivoted at 16 to the frame. 'lhe driving arm 17 is pivoted at i8 to a linlr 19, which in turn is pivoted :it 2() to the trame. A depression olf the treadle to which the connection rod 2 is joined, causes the depression of the rocker 14, and. simultaneously therewith causes the disengagement of the dog` 6 irom the clutch 21 and the heel 22 from the recess 23 in the hub of an eccentric 24. fis the shaft 25 revolves continuously while the machine in operation7 the disengagement of the clutch 21 causes the eccentric to be locked te the shaft so that the eccentric arm 2G rocks the driving arm i7 on its pivot 18 and causes the driver 27 to insert a staple into the shoe leather which is in the proper place. 'llie engagement et the clutch 21 with the cosi-4 tinuously rotating part from which driving' motion is derived, is severed when one revolution is made and the dog is again reached. It is believed that the above description (although brief) is sui'icient to enable the reader to gain a general idea ot the operation of the stapling machine, and attention is iioiv directed to the told toi'iii ing i'iieehaiiisiii which, iii ooiiihiiiatioii with the foregoing stapliniil iiiacluiie, constitutes the invention. lhe purpose olf the invention is to form a fold 2S (Fig. 6) at the edge or the upper leather 2f) and lining El() and at each side of a staple 31 as the latter is driven in place on the llange l2 of the furrow i by the driver 27. Again, it is a purpose of the invention to draw down the upper leather 29 and lining 3 smoothly around the toe of the last 34, not only for the purpose ol: making a shoe of very neat appearance, but also to properly stretch the upper leather and lining and :further to provide an ample selvage Z between the line oi staples 231 and the edge lo of the last so that there may be plenty oit room for inserting the line of stitchingl in Fig. 15.

Consider irl. The stapling bracket detachable 'from the `trame 8 of the machine, to which it is normally secured b v means of a bolt 39. The heel i0 of the bracket 38 has a rectangular recess 41 in which the ends of the staples 42 are upset when driven by the driver 27 as in Fig. Plates carry the lasting lingers 44 which are spaced apart sufficiently to admit the staple guide 45 when the driver 27 is depressed to drive a staple. Each lasting linger terminates in a flattened end or plate 46 through which it is mounted on the inside of each of the plates 43 by means of bolts 47. These bolts extend through slots 48 in the plates 43, the slots enabling longitudinal adjustment of the lastingl lingers so as to enable lengthening the pleats 28 (Fig. 6). The plates 4? are adjustable vertically by means of bolts 49 and slots 5() so as to enable making larger lolds and thus draw the work up closer around the toe of the last.

111 stein 5l. passing transversely of the lasting lingers and having ithreaded ends to receive the adjusting nuts 52 and 53 (Fig. 8), carries springs 54 and 55 which respectively bear on the outer sides of the lasting fingers and impai't a certain resiliency to the lingers which is valuable in lettingr the lingers give when the staple guide 45 imposes upon an upper structure which might be thicker than others. il.. supporting bridge 56, secured at 57, so as to occupyY a desire-d posi on beneath the g" lends support to the lingers and taires from them strains which might otherwise be injurious.

The type ot shoe which this siapling niachine is intended to handle is more )articularly the type disclosed in my lnited Sta tes Letter Patents granted lluly 8, 1924, although the use of the machine is not conliiied solely to stapling shoes of this type. Upon presenting the shoe to the stapling machine the flange `32 is inserted beneath the lasting lingers llfl, the upper leather 29 and lining 30 being' placed above.

Attention is neXt directed to Fig. 4l: which shows lthe irst step in the operation of the machine. The operator depresses the treadle (not shown) and consequently causes the rocker l-l to swing down on its pivot le (Fig. 1) so that the staple guide t5 is brought down and presses the upper structure in between the ends of the lasting fingers Simultaneous with this act (and necessarily so' because they are mounted up on the same structure), the side wipers 58, 59 and the fold controller 60 are brought down upon the shoe upper structure so that the upper 29 and lining 30 are drawn tight over the toe of the last Bet (Fig. el) by the fold controller and also are drawn tightly over the ends of the lasting lingers by the side wipers 5S, 59 (Fig. 10).

lf the imprints oit' the staple guide 45, side wipers and fold controller were deep enough, they would appear in Fig.v 11. is stated above, this view is an exaggerated illustration and in actual practice 'these imprints do not appear on the leather. However, by considering the imprints, shown in Fig. 11, the reader can readly conceive how the leather is gripped in a number ont places to effectively draw down the leather over the toe of t1 e last and at the same time flraw it down over the ends of the lasting' lingers.- The result of driving a number of staples is to produce a series oi folds 28 6) which take up thc slachA leather' and enable the production olf a finely linished shoe when completed.

siiipport Gl carries both the side wipers and told controller. Screws 62 (Figs. "Z, 13 and 1st) secure the support upon the driving head oi the rocker 14, both the support and the driving head having fliuitable apertures (Figs. 12 and 13) into which the screws pass. lf `or purposes oi perpcinlicular adjustment, the side Wipers are slotte-:l at 63 and the :told controller is slotted at lil Screws 65 and 66 respectively pass throu h the slots and enable tightening the arious parts in the desired position.

However, the screws G5 of the side wipers also pass through horizontal slots GT inthe sides olI the support 6l and thence directly into the driv ng' head. Upon unloosoningV the s lo adjusted head so as' to advance the told controller il() in rea. evt to the ends oli the la gers 4? as unich as desired. The se ews (ill pass directly into the liront of the (il and hive no connection with the sii head of the machine.

ln. order 'that no damage may befall the leather when the driving head is br( 'ht down as in Fig. 11:, the ends of the side wipscrews 65 the support can be outwardly in respect to the drivirg engaged and ers 58, 59 are rounded. This roundiirj may consist of merely bending the ends over upon themselves as shown in Figs. 13 and 1.4.1., or it may consist of other arrangements deriving the sameellect. lt is necessary to bend the lower end ol the l'old controller' GO inwardly so to come closely to the ends ot the lasting lingers. rlhe lower end of the fold contro is liared as shown, so as to present an iunpley grippi surface or edffe The stapling mechani. of the machine is so designed that the staples i231, re driven far enoughaway 'from the edge oi the last (Fig. 3) to leave su'liicient space for the placing' ol the stitches iccordin 'to the method. ol making shoes disclosed in the Patent 1,500,527`1nentioned above, the crease at the base oli' the flange forms a 'guide for the needle during sewing. As it would obviously be undesirable to have the staples driven too close to this crease, it evident that the function of the machine in driving: the staples well beyond the selvage 6) well adapts this machine to carry out the aforesaid method. lt is to be observed in Fig. that the upper leather and lining' are allizied around the heel seat by inc s staples. 'lhis particular result cannot be accomplished with the mechanism as it i s now arranged, it being necessary to remore the/side wiper and fold controller support (31 and, also to substitute another style of stapling bracket rlhis particular bracket is the subject mattei' of another application, and a description thereoie would 'tind no place here. 1

Attention is directed to Fig'. 5 which illus'- trates an act which immediately follows the act in Fig The staple l2 is driven immediately er the staple Iguide i5, side wipers 58., and pleat controller (3() have performed their functions kof drawing the leather down tightly over the ends of the lasting ngers and over the end ot the toe ot the last. As explained above, a depression of the treadle not only depresses the rocker 1i but also sets the shaftil in motion so that the driving arm 1'? (lf 1) is rocked on its pivot 18 and the driver 27 is caused to drive a staple. This is the act illustrated in Fig. 5, wherein the driving arm 17 and driver 27 are shown depressed.

ll-.lhile the construction and arrangement ol the improved stapling `machine as herein described and claimed, is that of a generally preferred form, obviously modiiications and changes may be made without departing from the spirit of the invention or the scope of the claims. l

.l claim l. rl stapling machine compiiisinev means to support a portion of a sole and a last which also carries an upper leather and lining, means to separate the sole portion from the upper leather and lining, stapling nicchanism forming part of the machine and being ai'iapted to be broughtdown upon the upper leather and lining to drive a staple therethrough into the sole portion, and means morable with the stapling mechanism upon being thus brought down lo form the peripheral portifnis of lthe upper leather and lining into folds. to take up the slack and at the same time. draw them tight ly over the toe of the last while the staple is driven.

A stapling mac une comprising means l to support the peripheral portion of a shoe sole and a last which also carries an upper and lining, spaced apart means which is inserted between the .sole and 'aid upper and lining when placed po .Ion upon said support, :-:taplinj f r 'banism including a staple guide which is adapted to enter between said spi apart means for the staplingr operaiion and form a i irt of two folds and means associated with said staple guide lo ei the upper and liningl on the outside o? nl spaced apart niean to complete the formation of said folds before the staple driven.

8. ,i stapling machine comprising means to support the peripheral portion of a. shoe sole and a last which also carries an upper and linino', spaced apart means which is inserted between the sole and said upper and lining` when placed in position upon said support, stapling mechanism including a staple guide which is adapted to enter between said spaced apart means for the stapling operation and form a part of two folds, means associated with said staple guide to engage the upper and lining on the outside of said spaced apart means to complete the formation of said folds before the staple is driven, and other means associ j with the staple guide to draw dov/n the upper and lining over the toe of the last and stretch them before the staple is driven, thereby preventing the upper and lining from receding and later pulling on the peripheral sole portion.

A stapling machine having means to support the peripheral portion of a shoe sole on a last also carrying an upper and lining, spaced apart means spaced from the support to enable positioning the sole therebetween and the support while the upper and lining` are positioned over said means, a staple guide adapted to enter the space between .said n'ieans and press the upper and lining against the sole., means enabling lateral yielding` of said means to accommodate varying thicknesses of uppers and linings, means associated with the staple guide to contact the leather and draw it and the lining around said spaced-apart means to form folds on the edge of the upper and lining, and means associated With the staple guide and fold-l'orming means also enga l' ig the upper to draw the upper tightly over the toe of the last.

5. A stapling machine comprising mechanism by vvnich staples are inserted in the upper, lining` and sole of a shoe, means up' on which the 'ieripheral portions of the upper, lining and .sele aril supported preparatory to the stapling cana-ation, and means constituting par" oi' the stapliirrY mechanism and said supportingf means coacting by engagement prior 'io the insert-ion ol' a staple to `form folds in the periphery of the upper and lining.

o. A stapling machine comprising means for supporting the peripheral portions of a shoe upper structure, means to support the peripheral portions of a sole in spaced relation to said upper structur-'= portions, and means including` a staple g to press the upper srueture toward the .sole to form folds around said upper structure supportinf means.

i. In combination with the stapling brackets and guide of a stapling machine, mea-ns spaced from the brackets to enable the insertion of the peripheral portion of a sole, the upper leather and lining being applied on top of said means, means mounting the aforesaid means in spaced-apart relation to admit the staple guide therebetween for pressing down the upper and lining and driving a staple, means on each side of the staple guide co-operating therewith and with said spaced-apart means to form folds, and other means associated with the staple guide to draw the upper and lining down tightly over the toe of a last by which they are carried, all before the staple is driven.

8. ln combination with the stapling bracket and guide of a stapling machine, fingers spaced from the bracket to enable insertion of the peripheral portion of a sole, means spacing the lingers apart to enable entrance of the staple guide to press an upper and lining applied above the fingers into contact With the sole preparatory to driving a staple, means associated with the staple guide to move down outside of the lingers to bear the upper and lining down and form folds, and other means associated with the staple guides to contact the upper in front of the fingers to draw the upper and lining tightly over the toe of a last by which they are carried.

9. ln combination With the stapling bracket and guide of a stapling machine, a pair of lingers, means supporting said lingers in spaced relation to the bracket to admit the peripheral portion of a sole and in spaced relation to themselves to enable the staple guide to press an upper and lining down between into contact With the sole, means mounted on each side of the staple guide to press the upper and `lining down 4on the outsides of the fingers and form folds, and other means rassociated with the staple guides ,to press the upper and lining down in front of the fingers.

l0. ,in combination with the stapling bracket and guide of a stapling machine, a pair of fingers, plat-es to support the fingers in spaced relation. to the bracket to enable insertion of the peripheral portion of a sole and in spaced relation to themselves to enable the guide to press an upper and lining down between the fingers in contact with the sole, side Wipers associated With the guide to move down outside of the fingers and bear the upper and lining down to form folds, and a fold controller associated with the guide adapted to bear the upper and lining down in front of the fingers.

11. In combination with the stapling bracket and guide of a stapling machine, a pair of fingers, a plate applied to each side of the bracket carrying the fingers in spaced relation to the bracket to enable insertion of the peripheral portion of a sole and. in spaced relation to themselves to admit the guide for pressing a lining and upper upon the sole preparatory to guiding a staple, side Wipers associated with the guide to press the lining and upper in contact with the sole outside of the fingers and forni folds, and a fold controller .in front of the guide to press the lining and upper into con tact With the sole in front of the fingers.

l2. ln combination with the stapling bracket and guideV of a stapling machine, a pair of lingers, plates mounted on the sides of the support to hold the lingers in spaced relation to the support for the insertion of the peripheral portion of a sole, and in spaced relation to each other to enable entrance of the guide to press a lining and upper against the sole between the fingers, means in connection with the fingers cnabling yielding thereof according to varying thicknesses of linings and uppers, side Wipers associated with the guide having a degree of resiliency to enable them to press the lining and upper down outside of the fingers at all variations thereof, and a fold controller also associated with the guides to press the lining and upper down to the sole in front of the fingers.

13. In combination with the stapling support and guide of a stapling machine, a pair of fingers, means to Which the lingers are attached holding them in spaced relation to the support to enable the insertion of the peripheral portion of a sole and in spaced relation to each other to permit the guide to press the edge of an upper and lining into Contact with the sole between the lingers, means in connection with the fingers enabling late-ral yielding thereof, said means comprising a stem common to both lingers having means on the ends sto adjust the vtension of in ,j osed springs, wipers disposed at the sides of the guide having some `resil- .r to enable adjustments to variations in the j'iositions of the lingers and bearthe upper and lining down on the outside into contact with the sole, and a fold controller disposed in front of the guide to press 'the upper and lining into contact with the sole in front of the fingers.

Yl in lcombination with the stapling support and staple guide of a stapling machine, a pair of lingers spaced vertically from the support to enable insertion of the j )eripheral portion of a sole and spaced laterally to pei-init the guide to press the edge of an upper and lining between the fingers into contact with the sole, means associated With the guide to move over the outsides of the lingers to form folds, means in front of the guide to engage the upper leather in front of the fingers and stretch the lining and upper leather, means enabling adjustment of the lingers forwardly to lengthen the fold, means to adjust the side engaging means, forwardly to correspond, means to adjust the lingers upwardly to make larger folds, and means to adjust the aforesaid stretching means in accordance with the other aforefsa i d adjustments.

l5. rllhe` combination in a stapling machine. of a .support for the peripheral edge of a sole, a pair of lingers extending forv-:ardly over the sole and supporting an upper leather and lining preparatory to a stapling operation, plates supporting the lingers, means incin'porated in the plate supporting means enabling adjustment ofthe fingers for .'ardly to lengthen folds formed in said stapling operation, and means to adjust the fingers upwardly to enable making i:- .r,(, cr folds.

to. 'The combination in a stapling machine, of a support for the peri'i'iheral edge of a :sf-file, lasting fingers extending forwardly of the support and over the edge of said col plates at the sides of the support maintaining the lingers in spaced rela-tion to themselvesy and to the sole support, and means carried by the support forming a bridge under the fingers to relieve them'of the strain of a subsequent stapling operation upon the sole.

17. In combination with the driving head and staple guide of a stapling machine, means situated o-n each side of the staple guide to follow the guide to form folds preparatory to a stapling operation, means in front of the staple guide to stretch the leather in said fold-forming act, and means by which the side and front means are carried and by which they are supported upon the driving head. j

18. In combination with the driving head and staple guide of a stapling machine,

wiper arms Situated at lille sirles of the Staple guide, a 'fold controller situated in front ol: the staple guide, means forming; the support of the side Wipers and fold controller 0n the chivin` head, means for adjusting the fold Cont-roller on said supporting means axially of the staple guide, and means securing the side Wipers both to the support and the driving head and having associated means enabling` axial adjustment; el: the side wipers inv respect to the Support aml also enal'iling' ontwaiil adjustment Ol 'he support in respect to the driving head, then carrying; Said siclo Wipers and Jfold controller therewith.

ADAM HENRY PRENZEL, 

